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Gr. SOBOTKA.

MAKING VINBGAR.

No. 458,985. e Patented Sept. l, 1891t UNITED STATES PATENT OFFICE,

GUSTAV SOBOTKA, OF NEIY YORK, N, Y., ASSIGNOR TO FLEISCHMANN d: OO., OF SAME PLACE.

MAKING VINEGAR.

SPECIFICATION forming part of Letters Patent No. 458,985, dated September 1, 1891.

Application filed October 17, 1890.

To all whom it may concern:

Be it known that I, GUsrAv SoBorKA, a citizen of Austria-Hungary, and a resident of the city of New York, in the county of New York and State of New York, have invented certain new andusefulImprovementsinMakingYine gar, of which the following is a specification.

This invention relates to improvements in making vinegar; and the object of my inven- Io tion is to produce a malt liquor which is adapted to be readily converted into vinegar, all as will be hereinafter described, and particularly defined in the claims at the end of this specification.

In the accompanying drawings an elevation, parts in section, of the improved apparatus which I use in making clear wort used in the manufacture of vinegar is shown.

In malting such cereals-for instance, like zo corn maltwthe temperature necessary for liquefying the starch must be higher than the temperature needed for saccliariiication. The finely-ground malt, after having been steeped and agitated in cold water for a time in the mixing apparatus A, is forced by pumps P through the pipes a and f into and through the filter-press F, whereby the clear malt extract is separated from the remaining grains. This process is known as the first pressing.

3o The solution of malt extract obtained by the said irst pressing runs from the filter-press F through the pipe m to the mashing-tub M, in which tub a quantity of finely-ground rye or other grain is added and said malt-extract solution and rye or other grain mixed there with. The cakes of grain from which the clear malt extract has been obtained, as above set forth, are taken from the press F and mixed with water and with the cakes of 4o the third pressing (to be described hereinafter) by a previous mash and are conveyed in any suitable manner to the pressure-tank C, where the entire mixture is boiled under a high pressure, thus converting all the starch to its liquid form, and also making soluble the nitrogenous substances contained in the grain which have not been dissolved heretofore. The pipe 'n serves for conveying steam into the pressure-tank C. The steam-pressure in the pressure-tank C is now used to force the contents of said tank through the Serial No. 368,465. (No specimens.)

pipes g and f into the filter-press F, whereby the liquid starch and the albuminoids in solu tion are separated from the grain remaining in the iinely-extracted grains. This operation is known as the second pressing. The cakes produced by the second pressing are removed and used as cattlefood. The solution forced out of the grains by the said second pressing is nearly boiling hot and is con- 6o ducted into the mash-tub M through the pipe m. The heat of the said solution is used to bring the entire contents of the mash-tub to the temperature necessary for saccharication, which is accomplished by the solution of diastase extracted from the malt in the rst pressing. After the saccharication is completed the mash is pumped by means of the pump P through the pipes g and f into the filter-press for the purpose of obtaining 7o an absolutely clear wort. This operation is known as the third pressing. The cakes remaining in the press after the third pressing are mixed with the cakes resulting from the rst pressing by the next following mash and boiled under pressure in the manner described above. The clear wort is conducted by the pipe a to the fermenting-tub w,where it is fermented with compressed yeast, and after the fermentation ceases the beer is 8o poured into vats, where it remains for a sufficient time to settle all yeast and myooderma aceti. The clear alcohol solution is then drawn off and used for charging vinegar-converters of any desired construction.' 85

In another application iiled on the same date herewith, Serial No. 368,466, I have described and claimed the method of producing the clear wort, and do notclaim it in this ap plication. 9o

IIavin g thus described my invention, I claim as new, and desire to secure by Letters Patent-- l. The process, substantially as described, of making a malt liquor adapted for conversion into vinegar, which consists in pressing a malt-extract solution out of ground steeped malt, mixing said malt-extract solution with finely-ground rye or other grain, mixing the cakes of grain of said pressing with water and roo with cakes of grain taken from a pressing subsequenttotherstpressingin aprecedingsimi lar process or mash, boiling this mixture under high pressure, pressing out the liquid from said boiled mixture, adding said liquid to the mixture of malt extract and rye or other grain, pressing this mixture to obtain clear Wort, fermenting the clear Wort with compressed yeast, and after settling drawing off the clear alcoholic solution vfor charging purposes, substantially as set forth.

2. The herein-described process of makinga malt liquor adapted to be converted into vinegar, which consistsin pressing a malt-extract solution out of ground steeped malt, mixing said malt-extract solution with finely-ground rye or other grain, mixing the cakes of grain of the firstpressing with Water and with In testimony that I claim the foregoing as my invention I have signed my name in pres- 'jnce of two subscribing Witnesses.

GUS'IAV SOBOTKA. Witnesses:

OSCAR F. GUNZ, MARTIN PETRY.

Correction in Letters Patent No. 458

It is hereby certiied that in Letters Patent No. 458,985, granted September l, 1891 upon the application of Gustav Sobotka, ot' Newr York, N. Y., for an improvement ir Making Vinegar, an error appears in the printed specification requiring the following correction, viz.: On page l, line 19, the Word matting should read masking; and that the said Letters Patent should be read with this correction `therein that the same may conform to the record of the case in the Patent Oftce.

Signed, countersigned, and seated this 24th day of November, A. D. 1891.

cYnUs BUssEY, Assistant Secretary of the Interior.

[SEAL] Countersigned:

W. E. SIMONDS,

Commissioner of Patents. 

